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A 1200 kg automobile is traveling at a velocity of 100 m/s. Is its energy PE or KE? How much energy does it possess? ​

Sagot :

Question:

  • A 1200 kg automobile is traveling at a velocity of 100 m/s. Is its energy PE or KE? How much energy does it possess?

Highlighted questions to answer:

  • Is its energy PE or KE?

It's energy is Kinetic (KE). If you can observe through the formulas of PE and KE, you'll notice that KE has these given above while PE does not.

[tex]PE=mgh[/tex] X (height is not present)

[tex]KE=\frac{1}{2} mv^2[/tex] √

  • How much energy does it possess?

To find it out, recall the KE formula.

[tex]KE=\frac{1}{2} mv^2[/tex]

Then, substitute the given terms [tex](m=1,200 kg, v=100m/s^2)[/tex] and solve.

[tex]KE=\frac{1}{2} (1,200)(100)^2[/tex]

[tex]KE=\frac{1}{2} (1,200)(10,000)[/tex]

[tex]KE=\frac{1,200}{2}(10,000)[/tex]

[tex]KE=600(10,000)[/tex]

[tex]KE=6,000,000[/tex] [tex]J[/tex]

To conclude, A 1200 kg automobile which travels at a velocity of 100 m/s possesses a total of 6 million Joules of energy.